﻿/* dk2Repository - Copyright (C) 2011 Daniel Kuczewski http://www.dk2.de/

 * This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA */

using System.Collections.Generic;

namespace dk2Repository.QueryBuilder
{
    internal abstract class WhereBuilder
    {
        private readonly ISqlBuilder _builder;

        private readonly Dictionary<int, List<string>> _whereClauses;

        protected WhereBuilder(ISqlBuilder builder)
        {
            _builder = builder;

            _whereClauses = new Dictionary<int, List<string>>();
        }


        protected string[][] WhereClauses
        {
            get
            {
                var clauses = new string[_whereClauses.Count][];
                var i = 0;
                foreach (var wc in _whereClauses)
                {
                    clauses[i] = wc.Value.ToArray();
                    i++;
                }
                return clauses;
            }
        }

        


        public void Add(string column, EnumCompareMode comparemode, int group = 0)
        {
            Add(column, comparemode, "", group);
        }

        public void Add(string column, EnumCompareMode comparemode, string parametername, int group = 0)
        {
            Add(_builder.CreateWhereString(column, comparemode, parametername), group);
        }


        public void Add(string where, int group = 0)
        {
            if (!_whereClauses.ContainsKey(group))
                _whereClauses.Add(group, new List<string>());

            _whereClauses[group].Add(where);
        }


        public abstract string CreateSql();

    }
}
